Ekg Chapter 2.2 Test

Front 1

Ventricular Depolarization

Back 1

What does the QRS Complex represent

Front 2

10 small boxes

Back 2

What should the standardization box in an ECG measure

Front 3

Refractoriness

Back 3

What is the term used to describe the period of recovery that cells need after being discharged before they are able to respond to a stimulus

Hint 3

"Re"covery - like time to think before responding

Front 4

Right Coronary Artery

Back 4

The SA node and AV node are supplied by this artery

Front 5

ST Segment

Back 5

The portion of the ECG tracing between the QRS complex and the T wave

Front 6

R wave

Back 6

The first positive deflection seen on the ecg after the p wave

Front 7

Right and Left bundle branches

Back 7

In the heart's conduction system, these receive an electrical impulse from the bundle of His and relays it to the Purkinje fibers in ventricular myocardium

Front 8

Compare P-P intervals

Back 8

How do you determine whether the atrial rhythm on an ecg tracing is regular or irregular?

Front 9

Repolarization of the Purkinje fibers

Back 9

What are the U waves thought to represent?

Front 10

SA Node

Back 10

The heart's primary pacemaker is located where

Hint 10

In the right atrium

Front 11

Q wave

Back 11

The first negative deflection seen after the P wave

Front 12

ST segment

Back 12

The end of the qrs complex to the beginning of the t wave is what segment?

Front 13

Hyperkalemia

Back 13

Tall, peaked T waves observed on the ecg are most commonly seen in patients with what excessive amount of an element

Hint 13

Potassium

Front 14

60-100 beats

Back 14

The intrinsic rate of the SA node

Front 15

20-40 bpm

Back 15

The intrinsic rate of the purkinje fibers

Front 16

Chest leads

Back 16

V1 v2 v3 v4 v5 v6

Front 17

Right arm

Back 17

Where is the negative electrode placed in lead II?

Front 18

Mechanical (contractile) condition of the myocardium

Back 18

The ecg does not provide information about what?

Front 19

Left leg/foot

Back 19

Where is the positive electrode placed in Lead III?

Front 20

PR Segment

Back 20

This segment represents the time necessary for the spread of an electrical impulse through the AV node, bundle of His, right and left bundle branches, and Purkinje fibers

Front 21

Purkinje fibers

Back 21

In the heart's conduction system, These receive an electrical impulse from the right and left bundle branches and relay it to the ventricular myocardium

Front 22

PR Interval

Back 22

On the ecg, this duration is the time necessary for the spread of an electrical impulse from the sa node through the av node, bundle of His, right and left bundle branches and the purkinje fibers

Front 23

0.20

Back 23

The PR interval is prolonged if it is more than how many seconds in duration?

Front 24

0.06-0.12

Back 24

The normal duration of the qrs complex is how many seconds?

Front 25

Inferior

Back 25

Leads II III and aVf views this surface of the heart

Front 26

Depolarization ; depolarization

Back 26

On an ecg, the p wave represents atrial ____________?

And the qrs complex represents ventricular___________?

Front 27

40-60 bpm

Back 27

The intrinsic rate of the av junction

Front 28

Absolute refractory period

Back 28

The period during the cardiac cycle when cells cannot respond to a stimulus, no matter how strong

Front 29

False statement about PRIs

Back 29

The PR interval normally lengthens as the heart rate increases. This statment is incorrect!

Front 30

Myocardial cells

Back 30

These cells are working cells of the heart that contain contractile filaments and form the muscular layer of the atrial walls and the thicker muscular layer of the ventricular walls

Front 31

Ventricular repolarization

Back 31

What does the T wave represent?

Front 32

The impulse followed an ABNORMAL PATHWAY or WAS DELAYED IN THE AREA OF AV NODE

Back 32

What is the significance of a PR interval measuring less than 0.12 OR more than 0.20 seconds

Front 33

Automaticity

Back 33

The ability of cardiac cells to spontaneously initiate an electrical impulse without being stimulated from another source

Front 34

Pacemaker

Back 34

These cells are specialized cells of the electrical conduction system responsible for the spontaneous generation and conduction of electrical impulses

Front 35

QT Interval

Back 35

This is measured from the beginning of the qrs complex to the end of the t wave

Front 36

Depolarize

Back 36

The cell does this when the cardiac cell muscle is stimulated

Hint 36

What it does to contract

Front 37

SA node ; right atrium

Back 37

This is the normal pacemaker of the heart _____

And it is located here ________

Front 38

Bipolar leads

Back 38

Leads I II III

Front 39

Lateral

Back 39

Leads I aVL V5 and V6 views this surface of the left ventrical

Hint 39

Which"side"